The massive farmers' march to Mumbai was a "stunning example of people's power", Gandhi said on Twitter.
The Congress, he added, stood with farmers and tribals marching in protest against the "apathy" of the Central and state governments.
"I appeal to PM Modi and the CM to not stand on ego and to accept their just demands," Gandhi tweeted.
Accusing the BJP governments of countering farmers with "lathis" (sticks) and "bullets", the party said this was not the first instance of their anti-farmer attitude and showed the "real face" of the saffron party.
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"This government is forcing farmers to commit suicide and befooling them on farm loan waivers," Surjewala told reporters.
There has been a 41.7 per cent rise in farmer suicides under the Modi Government and Maharashtra tops the list of such deaths, Surjewala said, quoting National Crime Records Bureau data.
From January 1 to October 31, 2017, there were 2,414 farmer suicides in Maharashtra alone, he added.
"While on the one hand the Central government is waiving thousands of crores of rupees in loans taken by their industrialist friends, it is apathetic to the demands of farmers for loan waivers. Consequently, around 50,000 farmers are marching in protest in Mumbai to gherao the Maharashtra Assembly," Surjewala said.
The Modi government was shedding "crocodile tears" for farmers and had inflicted a "double whammy" on farmers, with agri-exports reducing and imports rising, he said, citing figures.
"The Modi government is anti-farmer, and that is the slogan resonating among farmers across the country," Singh added.
Chief minister Fadnavis said today his government was "sensitive and positive" towards the demands of farmers and tribals, who marched from Nashik to Mumbai to draw the administration's attention towards their problems.
Fadnavis was responding to a discussion in the Assembly, initiated by Leader of Opposition Radhakrishna Vikhe Patil, who lauded the farmers for their peaceful protest.
The farmers demand an unconditional loan waiver and transfer of forest land to tribal farmers who have been tilling it for years.
The CPI(M)-affiliated All India Kisan Sabha is spearheading the protest.
The Shiv Sena has also lent its support to the farmers' stir.